197222648721 has 16 divisors (see below), whose sum is σ = 300588079104. Its totient is φ = 112676783184.

The previous prime is 197222648719. The next prime is 197222648759. The reversal of 197222648721 is 127846222791.

It is a happy number.

It is not a de Polignac number, because 197222648721 - 2¹ = 197222648719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197222648321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800295 + ... + 1017308.

It is an arithmetic number, because the mean of its divisors is an integer number (18786754944).

Almost surely, 2^197222648721 is an apocalyptic number.

It is an amenable number.

197222648721 is a deficient number, since it is larger than the sum of its proper divisors (103365430383).

197222648721 is a wasteful number, since it uses less digits than its factorization.

197222648721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822780.

The product of its digits is 1354752, while the sum is 51.

The spelling of 197222648721 in words is "one hundred ninety-seven billion, two hundred twenty-two million, six hundred forty-eight thousand, seven hundred twenty-one".